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Finding the Fourth Proportional to 679,757.98, 938,111.86 and 449,919.26

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Solution

The fourth proportional to 679,757.98, 938,111.86 and 449,919.26 is: 620,918.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,757.98 : 938,111.86 = 449,919.26 : x
  2. Step 2: Convert to fraction form
    679,757.98/938,111.86 = 449,919.26/x
  3. Step 3: Cross multiply
    679,757.98x = 938,111.86 × 449,919.26
  4. Step 4: Simplify right side
    679,757.98x = 422,074,593,848.42
  5. Step 5: Solve for x
    x = 422,074,593,848.42/679,757.98
  6. Step 6: Final answer
    x = 620,918.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.